Is the use of a toaster 100% efficient? Why or why not

If 320 J of work is done on a spring with a spring constant of 730 N/m, how far will it stretch? a 0.58 m b0.87 m c0.94m d0.61

The solubility of table sugar in water what as the temperature increases Is it increases or something else?

How many atoms of each element are in the reactants?

Passing an electric current through an unknown gas produces several distinct wavelengths of visible light. In this problem, you will find the wavelengths of the unknown spectrum by observing that they form first-order maxima at angles of 24.2°, 30.

What is the partial pressure of water vapor in an air sample when the total pressure is 1.00 atm, the partial pressure of nitrogen is 0.79 atm, the partial pressure of oxygen is 0.20 atm, and the partial pressure of all other gases is 0.0044 atm?

Why is the calorimeter assembled by placing one cup inside the other?

The current through two identical light bulbs connected in a series is 0.25 amps. The voltage across both bulbs is 100 volts. Find the resistance of a single light bulb.

The Sun transfers light energy that is transformed into what kind of energy in plants?

The siren of a fire engine that is driving northward at 30.0 m/s emits a sound of frequency 2000 Hz. A truck in front of this fire engine is moving northward at 20.0 m/s.

If an atom has 34 protons and 40 neutrons, what is the mass number?